The reason for the yellow urine is due to the yellow pigment contained in the drug, which is not easily absorbed by the kidneys and can be filtered through the glomerulus into the urine, hence the yellow urine. The longer you take the drug, the higher the dose, the more yellow the urine will be, which is a normal phenomenon and usually does not cause damage to the organism. It is recommended to drink more water and urinate more during the medication period, which can promote the metabolism of these yellow pigments, and the urine can generally return to normal within 2-3 days after stopping the medication. In addition, some drugs do not have yellow pigments and patients may have problems with yellow urination, which may be related to too little water consumption and over-concentration of urine. There are also some patients with liver and gallbladder problems, which can also cause increased bilirubin, and when this occurs, yellow urine can also occur, and it is recommended to visit the hospital promptly.